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发布者:微桥FP7102 发布时间:2010-1-14 阅读:5722次    关键字: FP7102 LED
FP7102-28V,2A Buck White LED Driver IC


FP7102 28V, 2A Buck Constant Current Switching Regulator for White LED
General Description
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    The FP7102 is a PWM control buck converter designed to provide a simple, high efficiency solution for driving high power LEDs. With a 0.25V reference voltage feedback control to minimize power dissipation, an external resistor sets the current as needed for driving various types of LEDs. The FP7102 includes a high current P-MOSFET to realize high efficiency and excellent transient characteristics. The PWM control circuit is able to change the duty ratio linearly from 0 up to 100%. Other features include user accessible EN/DIM pin for enabling and PWM dimming of LEDs, thermal shutdown, cycle-by cycle current limit and over current protection.

Features
Wide Supply Voltage Operating Range: 3.6 to 28V
Built-in P-MOSFET for 2A Loading Capability 
Precision Feedback Reference Voltage: 0.25V (2%)
Low Current Consumption: 4mA
Internal Fixed Oscillator Frequency: 320KHz (Typ.)
Internal Soft-Start Function (SS)
Over Current Protection
Package: SOP-8L

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